can wi-fi be used to track the location in indoors? if yes, what will be useful routers or the access points to get better res

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Unlikely it will work with just a consumer router. All positioning systems are based on transmitting very precise clock values and then comparing the time transmitted to the time received and calculating distance. Even if you had a a good clock source the inefficiencies in 802.11 wireless will destroy any accuracy. 1ms is nothing for computers but for a gps you get way over 100 miles of inaccuracy.
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bill001g

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Aug 9, 2012
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Unlikely it will work with just a consumer router. All positioning systems are based on transmitting very precise clock values and then comparing the time transmitted to the time received and calculating distance. Even if you had a a good clock source the inefficiencies in 802.11 wireless will destroy any accuracy. 1ms is nothing for computers but for a gps you get way over 100 miles of inaccuracy.
 
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